Fiber-cleaning device



Patented Mar, 27, 1928.

TATEg ma ns MORRIS WEHLI, OF BASEL, SWITZERLAND.

FIBER-GLEANIN G DEVICE.

Application filed August 18, 1926, Serial No. 130,059, and in France August 24, 1925.

The object of my invention is to provide an improved cleaning device applicable, broadly, to all machines serving to heckle, clean, or dress cotton or other fibers of any sort or kind, and specially applicable to carding machines.

The improved device combines a grid of the type disclosed in my prior French Patent No. 486,507, granted January 18, 1918, and a cleaning knife which is adjustable in position and is adapted to assist the work of the knives of the said grid and of the breaker or such-like cylindrical element or roll.

In the accompanying drawing, Figure 1 is a side view of the invention, showing two bars of the grid in section; and Fig. 2 is a perspective view, on a reduced scale, illustrating the mounting of the cleaning knife. 7

The grid 1, which may be similar to that illustrated in my said French patent, is located beneath the toothed breaker cylinder or roll 2 or analogous part; and its bars, which may be stationary or movable, are connected with the supporting brackets or cheeks 10, these brackets being shiftable in all directions. At the front part of the grid is arranged a cross-piece 3 pivotally mounted on a spindle 4; and a screw 5 or other suitable fastening device engages in a slot 6 made for this purpose in a lug 3 provided at each end of the cross-piece and permits the latter to be secured in adjusted position relative to the teeth of the breaker 2 or other device, according to the nature of the material to be operated upon.

The cleaning knife, which constitutes one feature of my invention, is indicated at 7 and is secured by means of a screw or screws 8 or other suitable fasteners at the front part of the cross-piece 3, to which part it is set at a more or less acute angle. Openings or slideways (not shown) made in the knife permit it to be adjusted to any desired position relative to its supporting cross-piece 3.

The cross-piece may, as shown, he formed with a multitude of perforations 11 so that it acts in effect as a sieve or screen, the func- 7 itself and fasten it by It will be apparent, therefore, that, owing to such double adjustment, the heckling and cleaning of the fibers will be efiected in a manner far more perfect than with ordinary grids. Hence, my device Will insure a more efficient elimination of clods and'waste, since the arrangement of knife 7 at an angle to the cross-piece 3 produces or sets up a suction action which attracts matters heavier than cotton, while the cotton and the sound fibers are blown by the air blast through the grid against the cylinder.

Waste drops through the grid between cross-piece 3 and the first bar of the grid.

I claim as my invention In a fiber-treating apparatus, the combination, with a toothed cylinder, of a grid; a cross-piece mount-ed in the front part of the grid to swing about a horizontal axis toward and from the cylinder and having a beveled front face; a depending lug rigidly connected to each end of the cross-piece to swing therewith, each lug being formed adjacent its lower end with a slot; fasteners engaged in said slots to retain said crosspiece in adjusted position with relation to said cylinder; a knife resting directly upon the beveled face of the cross-piece and adjustable edgewise toward and from the cylinder and independently of the adjustment ofsaid cross-piece; and fastening means engaged with the knife to retain it in adjusted position.

In testimony whereof I affix my signature.

MORRIS WEHLI. 

